function arrayBufferToBase64(array) {
  array = new Uint8Array(array)
  var length = array.byteLength
  var table = ['A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '+', '/']
  var base64Str = ''
  for (var i = 0; length - i >= 3; i += 3) {
    var num1 = array[i]
    var num2 = array[i + 1]
    var num3 = array[i + 2]
    base64Str +=
          table[num1 >>> 2] +
          table[((num1 & 0b11) << 4) | (num2 >>> 4)] +
          table[((num2 & 0b1111) << 2) | (num3 >>> 6)] +
          table[num3 & 0b111111]
  }
  var lastByte = length - i
  if (lastByte === 1) {
    var lastNum1 = array[i]
    base64Str +=
          table[lastNum1 >>> 2] + table[(lastNum1 & 0b11) << 4] + '=='
  } else if (lastByte === 2) {
    // eslint-disable-next-line no-redeclare
    var lastNum1 = array[i]
    var lastNum2 = array[i + 1]
    base64Str +=
          table[lastNum1 >>> 2] +
          table[((lastNum1 & 0b11) << 4) | (lastNum2 >>> 4)] +
          table[(lastNum2 & 0b1111) << 2] +
          '='
  }
  return base64Str
}
export default arrayBufferToBase64
